Multi-Digit Addition with Regrouping

Front

What is multi-digit addition?

Back

Multi-digit addition is the process of adding numbers that have more than one digit, such as 23 + 45 or 647 + 381.

Front

What does regrouping mean in addition?

Back

Regrouping in addition means carrying over a value from one column to the next when the sum of a column exceeds 9.

Front

How do you add 647 + 381?

Back

To add 647 + 381, align the numbers by place value and add each column, regrouping if necessary. The answer is 1,028.

Front

What is the sum of 27 + 56?

Back

The sum of 27 + 56 is 83.

Front

How do you add 87 + 28?

Back

To add 87 + 28, align the numbers and add: 7 + 8 = 15 (write 5 and carry 1), then 8 + 2 + 1 = 11. The answer is 115.

Front

What is the result of 35 + 48?

Back

The result of 35 + 48 is 83.

Front

How do you add 222 + 771?

Back

To add 222 + 771, align the numbers and add: 2 + 1 = 3, 2 + 7 = 9, 2 + 7 = 9. The answer is 993.

Front

What is a carry in addition?

Back

A carry in addition is when the sum of a column exceeds 9, and you move the extra value to the next column.

Front

What is the first step in multi-digit addition?

Back

The first step in multi-digit addition is to align the numbers by their place values (ones, tens, hundreds, etc.).

Front

What do you do if the sum of a column is 10 or more?

Back

If the sum of a column is 10 or more, you write down the last digit and carry over the first digit to the next column.